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Introduction to Linear Regression: Polynomial Regression - Kasun's Views

http://csviews.blogspot.com/2014/10/linear-regression-2.html

My Journal on Programming Java ML so on. Introduction to Linear Regression: Polynomial Regression. October 26, 2014. This form of regression is used to fit more complex functions and this is a general concept not restricted to linear regression, but also used commonly in classification algorithms such as Logistic Regression and Neural Networks as well. I hope to talk about it in detail in a future post. For now take a look at the following scatter plot. Solution for this is using polynomial features.

csviews.blogspot.com

October 2014 - Kasun's Views

http://csviews.blogspot.com/2014_10_01_archive.html

My Journal on Programming Java ML so on. Introduction to Linear Regression: Cost Function. October 29, 2014. Cost Function (Method I). For calculating the cost in linear regression, typically we use Sum of Squared Error method(SSE). J( theta) = frac{1}{2m} sum {i=1} m{(h(x {(i)})-{y {(i)} ) 2} ). The goal is to minimize  ( J( theta) ) and figure out ( theta ) values corresponding to the minimum cost. There are several optimization algorithms used to achieve this. Posted by Kasun Amarasena. October 7, 2014.

csviews.blogspot.com

June 2014 - Kasun's Views

http://csviews.blogspot.com/2014_06_01_archive.html

My Journal on Programming Java ML so on. Abstract Factory Pattern in Java. June 5, 2014. Abstract Factory pattern, another GoF pattern which falls under the category of creational design patterns, deals with a factory of factories (sometimes called a super factory). Main intent of this pattern is to instantiate families of related objects without exposing their concrete classes to the client and thereby reducing the complexity when dealing with large systems. 160;pattern we have only one main product.

csviews.blogspot.com

Singleton Pattern in Java: Best Practices - Kasun's Views

http://csviews.blogspot.com/2014/03/singleton.html

My Journal on Programming Java ML so on. Singleton Pattern in Java: Best Practices. March 11, 2014. Creational patterns such as Singleton provide mechanisms for object instantiation. The purpose of the Singleton is to ensure that only one instance of a particular class is created and provide global access to it. 1 Early/eager initialization with a static factory method. 2 Lazy initialization with double-checked locking. 3 Initialization on demand holder. Lazy initialization with double-checked locking.

csviews.blogspot.com

Archive - Kasun's Views

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My Journal on Programming Java ML so on. Method Overriding with Exceptions in Java. Comparison of Maps in Java collections framework. Dropbox as a Git Remote Repository. Introduction to Linear Regression: A Machine Learning Approach. Introduction to Linear Regression: Polynomial Regression. Introduction to Linear Regression: Cost Function. Introduction to Linear Regression: Normal Equation. Subscribe to: Posts (Atom). Singleton Pattern in Java: Best Practices. Abstract Factory Pattern in Java.

csviews.blogspot.com

Abstract Factory Pattern in Java - Kasun's Views

http://csviews.blogspot.com/2014/05/abstract-factory.html

My Journal on Programming Java ML so on. Abstract Factory Pattern in Java. June 5, 2014. Abstract Factory pattern, another GoF pattern which falls under the category of creational design patterns, deals with a factory of factories (sometimes called a "super factory"). Main intent of this pattern is to instantiate families of related objects without exposing their concrete classes to the client and thereby reducing the complexity when dealing with large systems. Pattern we have only one main product.

csviews.blogspot.com

Introduction to Linear Regression: Cost Function - Kasun's Views

http://csviews.blogspot.com/2014/10/linear-regression-3.html

My Journal on Programming Java ML so on. Introduction to Linear Regression: Cost Function. October 29, 2014. Cost Function (Method I). For calculating the cost in linear regression, typically we use Sum of Squared Error method(SSE). J( theta) = frac{1}{2m} sum {i=1} m{(h(x {(i)})-{y {(i)} ) 2} ). The goal is to minimize ( J( theta) ) and figure out ( theta ) values corresponding to the minimum cost. There are several optimization algorithms used to achieve this. Alpha ) - Learning rate. For 1 to N:.

csviews.blogspot.com

Method Overriding with Exceptions in Java - Kasun's Views

http://csviews.blogspot.com/2015/03/method-overriding-with-exceptions.html

My Journal on Programming Java ML so on. Method Overriding with Exceptions in Java. March 17, 2015. Understanding method overriding with Exceptions has made some confusions in my mind. So I tried to list all the possible cases in terms of declarations of exceptions in super class method. The list of 3 main cases are as follows. Case 1: Super class method declares NO exceptions. Here there are only 2 possible sub cases. Sub class method declares one or more Unchecked. Sub class method can declare at least.

csviews.blogspot.com

Introduction to Linear Regression: Normal Equation - Kasun's Views

http://csviews.blogspot.com/2014/11/linear-regression-4.html

My Journal on Programming Java ML so on. Introduction to Linear Regression: Normal Equation. November 1, 2014. Normal Equation (Method II). The use of Normal Equation to solve for the optimal ( theta ) and find the hypothesis function is an alternate method to what we talked about in the last post and probably the easiest, but of course they have their own benefits and drawbacks. Is our feature matrix and for the intercept term ( theta 0 ), a column of ones should be added to X. Exceeds number features( n.

csviews.blogspot.com

March 2015 - Kasun's Views

http://csviews.blogspot.com/2015_03_01_archive.html

My Journal on Programming Java ML so on. Comparison of Maps in Java Collections Framework. March 26, 2015. Maps, Hash tables(in general sense), Dictionaries whatever you call them, in every well known programming language there are similar data structures. In java we have Maps as a part of the collections framework. Although Maps do not implement Collection interface. Posted by Kasun Amarasena. 0 Post or read comments. Method Overriding with Exceptions in Java. March 17, 2015. Posted by Kasun Amarasena.